/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=BIGGEST --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 -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:46:30,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:46:30,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:46:30,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:46:30,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:46:30,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:46:30,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:46:30,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:46:30,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:46:30,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:46:30,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:46:30,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:46:30,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:46:30,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:46:30,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:46:30,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:46:30,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:46:30,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:46:30,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:46:30,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:46:30,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:46:30,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:46:30,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:46:30,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:46:30,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:46:30,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:46:30,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:46:30,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:46:30,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:46:30,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:46:30,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:46:30,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:46:30,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:46:30,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:46:30,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:46:30,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:46:30,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:46:30,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:46:30,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:46:30,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:46:30,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:46:30,287 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 [2020-10-12 15:46:30,311 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:46:30,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:46:30,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:46:30,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:46:30,313 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:46:30,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:46:30,314 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:46:30,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:46:30,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:46:30,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:46:30,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:46:30,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:46:30,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:46:30,315 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:46:30,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:46:30,315 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:46:30,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:46:30,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:46:30,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:46:30,316 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:46:30,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:46:30,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:46:30,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:46:30,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:46:30,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:46:30,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:46:30,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:46:30,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:46:30,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:46:30,318 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:46:30,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:46:30,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:46:30,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:46:30,653 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:46:30,655 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:46:30,656 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-10-12 15:46:30,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7512ed67/e97c9f5b6e2046e498d6df4d92c5e5fe/FLAG7c750b6b1 [2020-10-12 15:46:31,232 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:46:31,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-10-12 15:46:31,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7512ed67/e97c9f5b6e2046e498d6df4d92c5e5fe/FLAG7c750b6b1 [2020-10-12 15:46:31,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7512ed67/e97c9f5b6e2046e498d6df4d92c5e5fe [2020-10-12 15:46:31,569 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:46:31,571 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:46:31,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:46:31,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:46:31,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:46:31,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:46:31" (1/1) ... [2020-10-12 15:46:31,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61445f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:31, skipping insertion in model container [2020-10-12 15:46:31,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:46:31" (1/1) ... [2020-10-12 15:46:31,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:46:31,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:46:32,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:46:32,092 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:46:32,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:46:32,213 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:46:32,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:32 WrapperNode [2020-10-12 15:46:32,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:46:32,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:46:32,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:46:32,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:46:32,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:32" (1/1) ... [2020-10-12 15:46:32,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:32" (1/1) ... [2020-10-12 15:46:32,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:32" (1/1) ... [2020-10-12 15:46:32,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:32" (1/1) ... [2020-10-12 15:46:32,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:32" (1/1) ... [2020-10-12 15:46:32,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:32" (1/1) ... [2020-10-12 15:46:32,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:32" (1/1) ... [2020-10-12 15:46:32,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:46:32,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:46:32,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:46:32,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:46:32,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:32" (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 [2020-10-12 15:46:32,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:46:32,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:46:32,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-12 15:46:32,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-12 15:46:32,343 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-12 15:46:32,344 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-12 15:46:32,344 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-12 15:46:32,344 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-12 15:46:32,344 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-10-12 15:46:32,344 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-10-12 15:46:32,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:46:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:46:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:46:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-12 15:46:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-12 15:46:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:46:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:46:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:46:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:46:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:46:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:46:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:46:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:46:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:46:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:46:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:46:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:46:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:46:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:46:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:46:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:46:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:46:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:46:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:46:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:46:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:46:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:46:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:46:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:46:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:46:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:46:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:46:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:46:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:46:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:46:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:46:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:46:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:46:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:46:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:46:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:46:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:46:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:46:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:46:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:46:32,352 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:46:32,352 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:46:32,352 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:46:32,352 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:46:32,352 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:46:32,352 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:46:32,352 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:46:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:46:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:46:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:46:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:46:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:46:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:46:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:46:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:46:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:46:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:46:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:46:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:46:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:46:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:46:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:46:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:46:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:46:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:46:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:46:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:46:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:46:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:46:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:46:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:46:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:46:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:46:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:46:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:46:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:46:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:46:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:46:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:46:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:46:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:46:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:46:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:46:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:46:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:46:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:46:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:46:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:46:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:46:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:46:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:46:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:46:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:46:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:46:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:46:32,360 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:46:32,360 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:46:32,360 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:46:32,360 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:46:32,360 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:46:32,360 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:46:32,360 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:46:32,361 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:46:32,361 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-12 15:46:32,361 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-12 15:46:32,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:46:32,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:46:32,361 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-12 15:46:32,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:46:32,362 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-12 15:46:32,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:46:32,362 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-10-12 15:46:32,362 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-10-12 15:46:32,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:46:32,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:46:32,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-12 15:46:32,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:46:32,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:46:32,675 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-12 15:46:32,889 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:46:32,889 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-12 15:46:32,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:46:32 BoogieIcfgContainer [2020-10-12 15:46:32,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:46:32,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:46:32,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:46:32,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:46:32,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:46:31" (1/3) ... [2020-10-12 15:46:32,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48319a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:46:32, skipping insertion in model container [2020-10-12 15:46:32,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:46:32" (2/3) ... [2020-10-12 15:46:32,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48319a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:46:32, skipping insertion in model container [2020-10-12 15:46:32,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:46:32" (3/3) ... [2020-10-12 15:46:32,917 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-10-12 15:46:32,925 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:46:32,931 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:46:32,941 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:46:32,959 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:46:32,959 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:46:32,960 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:46:32,960 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:46:32,960 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:46:32,960 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:46:32,960 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:46:32,960 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:46:32,979 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-10-12 15:46:32,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 15:46:32,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:32,988 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] [2020-10-12 15:46:32,989 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:32,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:32,995 INFO L82 PathProgramCache]: Analyzing trace with hash 960784814, now seen corresponding path program 1 times [2020-10-12 15:46:33,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:33,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381970423] [2020-10-12 15:46:33,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:33,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:33,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:33,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:33,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:33,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:33,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:33,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 15:46:33,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:46:33,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-12 15:46:33,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:33,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:33,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-12 15:46:33,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:33,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:46:33,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:33,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:33,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:33,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:33,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:33,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:46:33,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:33,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:33,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:46:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:33,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:33,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:33,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:33,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:46:33,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:46:33,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:46:33,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:33,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:33,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 15:46:33,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:33,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:33,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 15:46:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:33,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:33,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:33,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:33,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:46:33,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:46:33,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:46:33,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 15:46:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:33,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:33,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 15:46:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:33,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:33,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:33,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:46:33,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:33,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:46:33,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:33,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:33,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 15:46:33,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:33,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:33,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:46:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:33,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:33,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:33,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:33,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:46:33,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:46:33,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:46:33,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:33,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 15:46:33,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:33,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:33,639 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 15:46:33,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381970423] [2020-10-12 15:46:33,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:46:33,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:46:33,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611400077] [2020-10-12 15:46:33,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:46:33,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:33,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:46:33,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:46:33,665 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 4 states. [2020-10-12 15:46:33,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:33,873 INFO L93 Difference]: Finished difference Result 136 states and 184 transitions. [2020-10-12 15:46:33,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:46:33,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-12 15:46:33,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:33,886 INFO L225 Difference]: With dead ends: 136 [2020-10-12 15:46:33,886 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 15:46:33,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:46:33,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 15:46:33,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-10-12 15:46:33,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-12 15:46:33,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-10-12 15:46:33,938 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 37 [2020-10-12 15:46:33,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:33,938 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-10-12 15:46:33,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:46:33,939 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-10-12 15:46:33,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 15:46:33,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:33,942 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:46:33,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:46:33,942 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:33,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:33,943 INFO L82 PathProgramCache]: Analyzing trace with hash 322036078, now seen corresponding path program 1 times [2020-10-12 15:46:33,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:33,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667547815] [2020-10-12 15:46:33,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:33,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:34,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:34,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:37,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:37,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 15:46:37,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:46:37,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3543 [2020-10-12 15:46:37,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:37,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:46:37,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 15:46:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:46:37,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:37,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:37,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:37,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:37,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:37,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:37,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:46:37,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:37,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:37,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:37,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:37,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:37,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:46:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:37,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:37,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:37,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:46:37,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:37,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 15:46:37,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:37,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:46:37,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:37,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:46:37,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:37,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 15:46:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:37,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:37,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:37,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 15:46:37,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:37,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 15:46:37,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:37,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:46:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:46:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:46:37,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:37,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 15:46:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:37,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:37,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:37,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:46:37,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:37,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:46:37,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:37,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:37,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 15:46:37,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:37,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:37,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 15:46:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:37,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:37,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:37,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:46:37,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:37,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:46:37,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:37,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:37,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 15:46:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:37,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:46:37,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667547815] [2020-10-12 15:46:37,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:46:37,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:46:37,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416455756] [2020-10-12 15:46:37,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:46:37,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:37,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:46:37,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:46:37,810 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 11 states. [2020-10-12 15:46:38,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:38,293 INFO L93 Difference]: Finished difference Result 119 states and 149 transitions. [2020-10-12 15:46:38,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:46:38,294 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-12 15:46:38,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:38,296 INFO L225 Difference]: With dead ends: 119 [2020-10-12 15:46:38,297 INFO L226 Difference]: Without dead ends: 82 [2020-10-12 15:46:38,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:46:38,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-12 15:46:38,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 66. [2020-10-12 15:46:38,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-12 15:46:38,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2020-10-12 15:46:38,316 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 44 [2020-10-12 15:46:38,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:38,317 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2020-10-12 15:46:38,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:46:38,317 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2020-10-12 15:46:38,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-12 15:46:38,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:38,319 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:46:38,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:46:38,320 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:38,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:38,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1427384127, now seen corresponding path program 1 times [2020-10-12 15:46:38,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:38,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955947817] [2020-10-12 15:46:38,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:38,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:38,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:38,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:41,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:41,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 15:46:41,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:46:41,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3458 [2020-10-12 15:46:41,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:41,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:46:41,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 15:46:41,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 15:46:41,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:41,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:41,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:41,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:41,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:41,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:41,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:46:41,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:41,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:41,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:41,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:41,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:41,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:46:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:41,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:41,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:41,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 15:46:41,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:41,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 15:46:41,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:41,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:46:41,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:41,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 15:46:41,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:41,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 15:46:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:41,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:41,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:41,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 15:46:41,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:41,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 15:46:41,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:41,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:46:41,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:46:41,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:46:41,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:41,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-12 15:46:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:41,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:41,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:41,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:46:41,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:41,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:46:41,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:41,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:41,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 15:46:41,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:41,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:41,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 15:46:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:41,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:41,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:41,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:46:41,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:41,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:46:41,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:41,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:41,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 15:46:41,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:41,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:41,997 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:46:41,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955947817] [2020-10-12 15:46:41,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:46:41,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:46:41,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793775607] [2020-10-12 15:46:41,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:46:42,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:42,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:46:42,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:46:42,001 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand 12 states. [2020-10-12 15:46:42,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:42,543 INFO L93 Difference]: Finished difference Result 125 states and 157 transitions. [2020-10-12 15:46:42,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:46:42,544 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-12 15:46:42,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:42,545 INFO L225 Difference]: With dead ends: 125 [2020-10-12 15:46:42,546 INFO L226 Difference]: Without dead ends: 79 [2020-10-12 15:46:42,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:46:42,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-12 15:46:42,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 55. [2020-10-12 15:46:42,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 15:46:42,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-10-12 15:46:42,565 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 47 [2020-10-12 15:46:42,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:42,566 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-10-12 15:46:42,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:46:42,566 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-10-12 15:46:42,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 15:46:42,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:42,567 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:46:42,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:46:42,568 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:42,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:42,568 INFO L82 PathProgramCache]: Analyzing trace with hash -877094443, now seen corresponding path program 1 times [2020-10-12 15:46:42,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:42,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607256921] [2020-10-12 15:46:42,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:42,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:42,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:42,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:42,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:43,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:47,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:47,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 15:46:47,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:46:47,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 15:46:47,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:47,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:46:47,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 15:46:47,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 15:46:47,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:47,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:47,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:47,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:47,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:47,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:47,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:46:47,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:47,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:47,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:47,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:47,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:47,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:46:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:47,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:47,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:46:47,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:47,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:46:47,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:47,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:46:47,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:47,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:46:47,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:47,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 15:46:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:47,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:47,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:47,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 15:46:47,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:47,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 15:46:47,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:47,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:46:47,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:46:47,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 15:46:47,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:47,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 15:46:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:47,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:47,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:47,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:46:47,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:47,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:46:47,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:47,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:47,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 15:46:47,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:47,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:47,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 15:46:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:47,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:47,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:47,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:46:47,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:47,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:46:47,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 15:46:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:47,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:46:47,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607256921] [2020-10-12 15:46:47,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:46:47,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:46:47,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680009940] [2020-10-12 15:46:47,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:46:47,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:47,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:46:47,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:46:47,820 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 12 states. [2020-10-12 15:46:48,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:48,337 INFO L93 Difference]: Finished difference Result 132 states and 166 transitions. [2020-10-12 15:46:48,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:46:48,337 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-12 15:46:48,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:48,339 INFO L225 Difference]: With dead ends: 132 [2020-10-12 15:46:48,339 INFO L226 Difference]: Without dead ends: 95 [2020-10-12 15:46:48,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:46:48,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-12 15:46:48,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 70. [2020-10-12 15:46:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-12 15:46:48,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2020-10-12 15:46:48,366 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 48 [2020-10-12 15:46:48,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:48,366 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2020-10-12 15:46:48,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:46:48,367 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2020-10-12 15:46:48,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 15:46:48,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:48,372 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:46:48,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:46:48,373 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:48,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:48,374 INFO L82 PathProgramCache]: Analyzing trace with hash 2083565480, now seen corresponding path program 1 times [2020-10-12 15:46:48,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:48,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204553141] [2020-10-12 15:46:48,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:48,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:48,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:48,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:48,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:48,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:53,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:53,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 15:46:53,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:46:53,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 15:46:53,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:53,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:46:53,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 15:46:53,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:46:53,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:53,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:53,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:53,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:53,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:53,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:53,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:46:53,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:53,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:53,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:46:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:53,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:53,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:53,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 15:46:53,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:53,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 15:46:53,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:53,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:46:53,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:53,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 15:46:53,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:53,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 15:46:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:53,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:53,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:53,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 15:46:53,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:53,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 15:46:53,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:46:53,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:46:53,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 15:46:53,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:53,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 15:46:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:53,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:53,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:53,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:46:53,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:53,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:46:53,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:53,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:53,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 15:46:53,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:53,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:53,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 15:46:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:53,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:53,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:53,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:46:53,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:53,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:46:53,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:53,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:53,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 15:46:53,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:53,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:46:53,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204553141] [2020-10-12 15:46:53,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:46:53,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:46:53,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238885852] [2020-10-12 15:46:53,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:46:53,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:53,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:46:53,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:46:53,606 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand 13 states. [2020-10-12 15:46:54,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:54,117 INFO L93 Difference]: Finished difference Result 129 states and 161 transitions. [2020-10-12 15:46:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:46:54,118 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-12 15:46:54,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:54,119 INFO L225 Difference]: With dead ends: 129 [2020-10-12 15:46:54,119 INFO L226 Difference]: Without dead ends: 83 [2020-10-12 15:46:54,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:46:54,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-12 15:46:54,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 59. [2020-10-12 15:46:54,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 15:46:54,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2020-10-12 15:46:54,129 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 51 [2020-10-12 15:46:54,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:54,129 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2020-10-12 15:46:54,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:46:54,130 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2020-10-12 15:46:54,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 15:46:54,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:54,131 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:46:54,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:46:54,132 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:54,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:54,132 INFO L82 PathProgramCache]: Analyzing trace with hash -137443652, now seen corresponding path program 2 times [2020-10-12 15:46:54,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:54,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133149938] [2020-10-12 15:46:54,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:54,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:54,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:54,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:55,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:55,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 15:46:55,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:46:55,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1049 [2020-10-12 15:46:55,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:55,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:46:55,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 15:46:55,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 15:46:55,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:55,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:55,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:55,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:55,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:55,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:55,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:46:55,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:55,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:55,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:55,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:55,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:55,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:46:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:55,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:55,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:55,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:46:55,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:55,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:46:55,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:55,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:55,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:55,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:55,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:55,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 15:46:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:55,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:55,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:55,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:55,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:46:55,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:46:55,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 15:46:55,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:55,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:46:55,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:55,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:46:55,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:55,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:46:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:55,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:55,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:55,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:46:55,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:55,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:46:55,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:55,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:46:55,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:55,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:46:55,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:55,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 15:46:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:55,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:55,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:55,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:46:55,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:55,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:46:55,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:55,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:46:55,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:46:55,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:46:55,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:55,491 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 15:46:55,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133149938] [2020-10-12 15:46:55,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:46:55,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 15:46:55,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266714301] [2020-10-12 15:46:55,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:46:55,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:55,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:46:55,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:46:55,495 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand 12 states. [2020-10-12 15:46:55,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:55,936 INFO L93 Difference]: Finished difference Result 79 states and 93 transitions. [2020-10-12 15:46:55,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:46:55,937 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-12 15:46:55,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:55,938 INFO L225 Difference]: With dead ends: 79 [2020-10-12 15:46:55,938 INFO L226 Difference]: Without dead ends: 75 [2020-10-12 15:46:55,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:46:55,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-12 15:46:55,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2020-10-12 15:46:55,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-12 15:46:55,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2020-10-12 15:46:55,947 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 52 [2020-10-12 15:46:55,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:55,948 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2020-10-12 15:46:55,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:46:55,948 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2020-10-12 15:46:55,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 15:46:55,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:55,949 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:46:55,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:46:55,950 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:55,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:55,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1960431148, now seen corresponding path program 1 times [2020-10-12 15:46:55,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:55,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248467260] [2020-10-12 15:46:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:55,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:55,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:56,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:57,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:57,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 15:46:57,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:46:57,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1664 [2020-10-12 15:46:57,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:57,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:46:57,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 15:46:57,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 15:46:57,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:57,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:46:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:57,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:57,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:57,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:46:57,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:57,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:46:57,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:57,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:57,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:57,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:57,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:57,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:46:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:57,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:57,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:57,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:46:57,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:57,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:46:57,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:46:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:46:57,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:46:57,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 15:46:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:57,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:57,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:57,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:57,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:46:57,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:46:57,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-12 15:46:57,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:57,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:46:57,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:57,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:46:57,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:57,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:46:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:57,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:57,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:57,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:46:57,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:57,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:46:57,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:57,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:46:57,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:46:57,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:46:57,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:57,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 15:46:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:57,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:57,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:46:57,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 15:46:57,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:46:57,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:46:57,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:46:57,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:46:57,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:46:57,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:46:57,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:46:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 15:46:57,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248467260] [2020-10-12 15:46:57,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:46:57,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:46:57,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628167626] [2020-10-12 15:46:57,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:46:57,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:46:57,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:46:57,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:46:57,995 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand 14 states. [2020-10-12 15:46:58,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:46:58,628 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2020-10-12 15:46:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:46:58,629 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-12 15:46:58,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:46:58,630 INFO L225 Difference]: With dead ends: 85 [2020-10-12 15:46:58,630 INFO L226 Difference]: Without dead ends: 81 [2020-10-12 15:46:58,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:46:58,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-12 15:46:58,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2020-10-12 15:46:58,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-12 15:46:58,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2020-10-12 15:46:58,638 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 53 [2020-10-12 15:46:58,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:46:58,639 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2020-10-12 15:46:58,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:46:58,639 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2020-10-12 15:46:58,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 15:46:58,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:46:58,640 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-12 15:46:58,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:46:58,640 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:46:58,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:46:58,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1656498620, now seen corresponding path program 2 times [2020-10-12 15:46:58,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:46:58,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095558833] [2020-10-12 15:46:58,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:46:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:46:58,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:58,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:58,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:46:58,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:03,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:03,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 15:47:03,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:47:03,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 15:47:03,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:03,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 15:47:03,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 15:47:03,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 15:47:03,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:47:03,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:47:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:03,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:03,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:03,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:47:03,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:03,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:47:03,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:03,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:47:03,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:03,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:47:03,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:47:03,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:47:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:03,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:03,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:03,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:47:03,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:03,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 15:47:03,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:47:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:47:03,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:47:03,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 15:47:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:03,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:03,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:03,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:47:03,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:03,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 15:47:03,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:03,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:47:03,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:03,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:47:03,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:03,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:47:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:03,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:03,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:03,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:47:03,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:03,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 15:47:03,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:03,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:47:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:47:03,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:04,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 15:47:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:04,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:04,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:04,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:47:04,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:04,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 15:47:04,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:04,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:47:04,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:04,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:47:04,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:04,282 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:47:04,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095558833] [2020-10-12 15:47:04,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:47:04,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 15:47:04,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493219747] [2020-10-12 15:47:04,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 15:47:04,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:47:04,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 15:47:04,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:47:04,285 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand 21 states. [2020-10-12 15:47:05,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:47:05,528 INFO L93 Difference]: Finished difference Result 148 states and 205 transitions. [2020-10-12 15:47:05,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 15:47:05,529 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 54 [2020-10-12 15:47:05,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:47:05,534 INFO L225 Difference]: With dead ends: 148 [2020-10-12 15:47:05,534 INFO L226 Difference]: Without dead ends: 144 [2020-10-12 15:47:05,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=163, Invalid=1169, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 15:47:05,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-12 15:47:05,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 110. [2020-10-12 15:47:05,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-12 15:47:05,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 148 transitions. [2020-10-12 15:47:05,575 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 148 transitions. Word has length 54 [2020-10-12 15:47:05,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:47:05,575 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 148 transitions. [2020-10-12 15:47:05,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 15:47:05,576 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 148 transitions. [2020-10-12 15:47:05,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 15:47:05,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:47:05,577 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:47:05,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:47:05,578 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:47:05,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:47:05,578 INFO L82 PathProgramCache]: Analyzing trace with hash 2079200446, now seen corresponding path program 1 times [2020-10-12 15:47:05,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:47:05,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392149512] [2020-10-12 15:47:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:47:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:05,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:05,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:05,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:05,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:06,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:08,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:08,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:10,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:10,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 15:47:10,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 15:47:10,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 15:47:10,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:10,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 15:47:10,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 15:47:10,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 15:47:10,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:10,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:47:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:10,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:10,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:10,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:47:10,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:10,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:47:10,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:10,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:47:10,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:10,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:47:10,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:10,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:47:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:10,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:10,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:10,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:47:10,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:10,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:47:10,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:10,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:47:10,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:10,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:47:10,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:10,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 15:47:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:10,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:10,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:10,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:47:10,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:10,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 15:47:10,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:10,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:47:10,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:10,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:47:10,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:10,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:47:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:10,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:10,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:10,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:10,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:10,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:47:10,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:47:10,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 15:47:10,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:47:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:47:10,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:10,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 15:47:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:10,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:11,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:11,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:47:11,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:11,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 15:47:11,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:11,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:47:11,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:11,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:47:11,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:47:11,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392149512] [2020-10-12 15:47:11,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:47:11,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 15:47:11,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631495181] [2020-10-12 15:47:11,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 15:47:11,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:47:11,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 15:47:11,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:47:11,109 INFO L87 Difference]: Start difference. First operand 110 states and 148 transitions. Second operand 20 states. [2020-10-12 15:47:11,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:47:11,997 INFO L93 Difference]: Finished difference Result 155 states and 219 transitions. [2020-10-12 15:47:11,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:47:11,998 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 54 [2020-10-12 15:47:11,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:47:12,001 INFO L225 Difference]: With dead ends: 155 [2020-10-12 15:47:12,001 INFO L226 Difference]: Without dead ends: 151 [2020-10-12 15:47:12,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:47:12,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-12 15:47:12,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 110. [2020-10-12 15:47:12,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-12 15:47:12,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 148 transitions. [2020-10-12 15:47:12,021 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 148 transitions. Word has length 54 [2020-10-12 15:47:12,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:47:12,021 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 148 transitions. [2020-10-12 15:47:12,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 15:47:12,022 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 148 transitions. [2020-10-12 15:47:12,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 15:47:12,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:47:12,023 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:47:12,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:47:12,024 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:47:12,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:47:12,024 INFO L82 PathProgramCache]: Analyzing trace with hash 2112171732, now seen corresponding path program 3 times [2020-10-12 15:47:12,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:47:12,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413096982] [2020-10-12 15:47:12,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:47:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:12,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:12,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:12,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:14,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:14,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 15:47:14,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:47:14,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2345 [2020-10-12 15:47:14,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:14,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:47:14,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 15:47:14,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 15:47:14,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:14,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:47:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:14,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:14,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:14,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:47:14,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:14,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:47:14,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:14,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:47:14,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:14,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:47:14,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:14,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:47:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:14,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:14,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:14,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:47:14,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:14,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:47:14,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:14,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:47:14,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:14,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:47:14,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:14,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 15:47:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:14,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:14,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:14,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:47:14,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:14,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 15:47:14,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:14,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:47:14,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:14,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:47:14,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:14,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:47:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:14,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:14,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:14,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:47:14,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:14,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:47:14,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:14,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:47:14,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:14,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:47:14,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:14,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 15:47:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:14,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:14,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:14,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 15:47:14,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:14,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 15:47:14,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:14,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:47:14,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:47:14,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:47:14,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 15:47:14,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413096982] [2020-10-12 15:47:14,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:47:14,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 15:47:14,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169952234] [2020-10-12 15:47:14,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 15:47:14,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:47:14,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 15:47:14,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:47:14,763 INFO L87 Difference]: Start difference. First operand 110 states and 148 transitions. Second operand 17 states. [2020-10-12 15:47:15,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:47:15,705 INFO L93 Difference]: Finished difference Result 135 states and 184 transitions. [2020-10-12 15:47:15,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:47:15,706 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-10-12 15:47:15,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:47:15,708 INFO L225 Difference]: With dead ends: 135 [2020-10-12 15:47:15,708 INFO L226 Difference]: Without dead ends: 129 [2020-10-12 15:47:15,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2020-10-12 15:47:15,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-12 15:47:15,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 114. [2020-10-12 15:47:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-12 15:47:15,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 153 transitions. [2020-10-12 15:47:15,725 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 153 transitions. Word has length 55 [2020-10-12 15:47:15,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:47:15,725 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 153 transitions. [2020-10-12 15:47:15,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 15:47:15,725 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 153 transitions. [2020-10-12 15:47:15,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 15:47:15,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:47:15,727 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-12 15:47:15,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:47:15,727 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:47:15,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:47:15,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1162383005, now seen corresponding path program 1 times [2020-10-12 15:47:15,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:47:15,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787736360] [2020-10-12 15:47:15,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:47:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:15,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:15,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:15,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:16,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:18,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:18,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 15:47:18,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:47:18,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2690 [2020-10-12 15:47:18,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:47:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 15:47:18,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 15:47:18,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:18,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:47:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:18,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:18,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:18,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:47:18,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:18,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:47:18,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:47:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:47:18,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:18,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:47:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:18,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:18,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:18,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:47:18,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:18,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:47:18,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:18,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:47:18,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:18,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:47:18,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:18,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 15:47:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:18,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:18,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:18,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:47:18,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:18,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 15:47:18,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:18,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:47:18,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:18,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:47:18,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:18,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:47:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:18,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:18,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:18,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:18,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 15:47:18,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:47:18,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 15:47:18,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:18,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:47:18,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:18,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 15:47:18,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:18,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 15:47:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:18,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:18,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:18,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:47:18,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:18,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:47:18,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:18,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:47:18,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 15:47:18,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:47:18,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:18,727 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 15:47:18,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787736360] [2020-10-12 15:47:18,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:47:18,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 15:47:18,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833261573] [2020-10-12 15:47:18,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 15:47:18,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:47:18,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 15:47:18,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:47:18,730 INFO L87 Difference]: Start difference. First operand 114 states and 153 transitions. Second operand 17 states. [2020-10-12 15:47:19,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:47:19,391 INFO L93 Difference]: Finished difference Result 221 states and 305 transitions. [2020-10-12 15:47:19,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:47:19,392 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 57 [2020-10-12 15:47:19,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:47:19,394 INFO L225 Difference]: With dead ends: 221 [2020-10-12 15:47:19,394 INFO L226 Difference]: Without dead ends: 150 [2020-10-12 15:47:19,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:47:19,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-12 15:47:19,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 129. [2020-10-12 15:47:19,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-12 15:47:19,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2020-10-12 15:47:19,412 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 172 transitions. Word has length 57 [2020-10-12 15:47:19,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:47:19,412 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 172 transitions. [2020-10-12 15:47:19,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 15:47:19,413 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 172 transitions. [2020-10-12 15:47:19,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 15:47:19,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:47:19,414 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-12 15:47:19,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:47:19,414 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:47:19,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:47:19,415 INFO L82 PathProgramCache]: Analyzing trace with hash 151265755, now seen corresponding path program 1 times [2020-10-12 15:47:19,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:47:19,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641690493] [2020-10-12 15:47:19,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:47:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:19,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:19,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:19,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:19,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:23,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:23,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 15:47:23,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:47:23,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4325 [2020-10-12 15:47:23,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:47:23,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 15:47:23,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:47:23,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:23,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:47:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:23,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:23,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:23,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:47:23,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:47:23,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:47:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:47:23,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:23,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 15:47:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:23,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:23,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:23,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:47:23,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:23,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:47:23,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:23,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:47:23,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:23,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:47:23,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:23,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 15:47:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:23,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:23,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:23,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:47:23,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:23,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 15:47:23,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:47:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:47:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:47:23,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:23,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:47:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:23,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:23,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:23,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 15:47:23,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:23,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:47:23,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:23,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:47:23,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:47:23,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 15:47:23,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:23,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 15:47:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:47:23,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:47:23,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:47:23,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:47:23,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:47:23,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:47:23,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:47:23,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:47:23,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 15:47:23,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:47:23,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:47:23,982 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 15:47:23,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641690493] [2020-10-12 15:47:23,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:47:23,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:47:23,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495805342] [2020-10-12 15:47:23,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:47:23,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:47:23,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:47:23,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:47:23,984 INFO L87 Difference]: Start difference. First operand 129 states and 172 transitions. Second operand 14 states. [2020-10-12 15:47:24,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:47:24,706 INFO L93 Difference]: Finished difference Result 218 states and 292 transitions. [2020-10-12 15:47:24,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:47:24,708 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2020-10-12 15:47:24,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:47:24,709 INFO L225 Difference]: With dead ends: 218 [2020-10-12 15:47:24,710 INFO L226 Difference]: Without dead ends: 150 [2020-10-12 15:47:24,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:47:24,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-12 15:47:24,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 128. [2020-10-12 15:47:24,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-12 15:47:24,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 169 transitions. [2020-10-12 15:47:24,726 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 169 transitions. Word has length 57 [2020-10-12 15:47:24,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:47:24,727 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 169 transitions. [2020-10-12 15:47:24,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:47:24,727 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 169 transitions. [2020-10-12 15:47:24,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 15:47:24,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:47:24,728 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:47:24,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:47:24,728 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:47:24,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:47:24,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1585084831, now seen corresponding path program 1 times [2020-10-12 15:47:24,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:47:24,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146047497] [2020-10-12 15:47:24,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:47:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:47:24,742 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:47:24,742 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:47:24,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:47:24,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:47:24 BoogieIcfgContainer [2020-10-12 15:47:24,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:47:24,764 INFO L168 Benchmark]: Toolchain (without parser) took 53192.81 ms. Allocated memory was 138.4 MB in the beginning and 758.6 MB in the end (delta: 620.2 MB). Free memory was 100.7 MB in the beginning and 255.7 MB in the end (delta: -155.0 MB). Peak memory consumption was 465.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:47:24,765 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 15:47:24,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.66 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 100.3 MB in the beginning and 166.3 MB in the end (delta: -66.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-10-12 15:47:24,767 INFO L168 Benchmark]: Boogie Preprocessor took 64.84 ms. Allocated memory is still 200.8 MB. Free memory was 166.3 MB in the beginning and 162.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-10-12 15:47:24,767 INFO L168 Benchmark]: RCFGBuilder took 620.08 ms. Allocated memory is still 200.8 MB. Free memory was 162.9 MB in the beginning and 111.5 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. [2020-10-12 15:47:24,768 INFO L168 Benchmark]: TraceAbstraction took 51858.77 ms. Allocated memory was 200.8 MB in the beginning and 758.6 MB in the end (delta: 557.8 MB). Free memory was 111.5 MB in the beginning and 255.7 MB in the end (delta: -144.2 MB). Peak memory consumption was 413.6 MB. Max. memory is 7.1 GB. [2020-10-12 15:47:24,772 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 642.66 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 100.3 MB in the beginning and 166.3 MB in the end (delta: -66.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.84 ms. Allocated memory is still 200.8 MB. Free memory was 166.3 MB in the beginning and 162.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 620.08 ms. Allocated memory is still 200.8 MB. Free memory was 162.9 MB in the beginning and 111.5 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 51858.77 ms. Allocated memory was 200.8 MB in the beginning and 758.6 MB in the end (delta: 557.8 MB). Free memory was 111.5 MB in the beginning and 255.7 MB in the end (delta: -144.2 MB). Peak memory consumption was 413.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 630]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L616] CALL, EXPR _get_nondet_int(2, 5) [L609] int len = from; [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; [L616] RET, EXPR _get_nondet_int(2, 5) [L616] const int len = _get_nondet_int(2, 5); [L617] SLL s = sll_create(len); [L617] CALL, EXPR sll_create(len) [L564] SLL head = ((void *)0); [L565] EXPR len-- [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L565] EXPR len-- [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L565] EXPR len-- [L565] COND FALSE !(len-- > 0) [L573] return head; [L617] RET, EXPR sll_create(len) [L617] SLL s = sll_create(len); [L618] CALL, EXPR _get_nondet_int(0, len - 1) [L609] int len = from; [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() [L610] COND TRUE len < until && __VERIFIER_nondet_int() [L611] len++ [L610] len < until && __VERIFIER_nondet_int() [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; [L618] RET, EXPR _get_nondet_int(0, len - 1) [L618] const int k = _get_nondet_int(0, len - 1); [L619] int i = 0; [L620] i < k && __VERIFIER_nondet_int() [L620] i < k && __VERIFIER_nondet_int() [L620] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L625] EXPR \read(s) [L625] CALL, EXPR sll_length(s) [L576] int len = 0; [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND FALSE !(\read(head)) [L581] return len; [L625] RET, EXPR sll_length(s) [L625] COND TRUE k + len != sll_length(s) [L630] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 51.7s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 719 SDtfs, 886 SDslu, 5016 SDs, 0 SdLazy, 5651 SolverSat, 455 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 379 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 246 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 43.1s InterpolantComputationTime, 666 NumberOfCodeBlocks, 666 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 597 ConstructedInterpolants, 0 QuantifiedInterpolants, 170763 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 87/185 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...